Prove it (Cos 0 + sin …
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Posted by Yuvraj Yadav 3 years, 9 months ago
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Yogita Ingle 3 years, 9 months ago
(cos 0+sin 45+sin 30)(sin 90-cos 45+cos 60)
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/* By algebraic identity
(a-b)(a+b) = a²-b² */
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0Thank You